Education at Islamic boarding school is not only an education that teaches Islamic knowledge, but also trains the students to be obedient in worship and behavior in their life. A factor of personality is one of the factors in discipline. An important factor in a person’s personality is espoused values to uphold discipline taught or instilled by parents, teachers, and a community that become the reference to be a better person. Therefore, this study was aimed to determine the level of students’ discipline which is extroverted and introverted personality, and to know the difference of students’ discipline level which is extroverted and introverted personality.

This study was a quantitative using a comparative method. The sample in this research is 35 older students who live in Islamic boarding school for about three years. The sampling technique used purposive sample, the instrument of this study used a discipline questionnaire and Eysenk assays for the standardized types of personality. To test the discipline validity, this study used Product Moment and Alpha Crinbach’s to test the reliability with the SPSS 16 for windows. The type of personality for its validity and reliability is not required because these assays are already standardized and tested by Esyenck.

Based on the result of this study showed that extroverted students are more in the category of “medium”, 24% or as many or four students, and that obtaining a high level of discipline categories by 76% or as thirteen students, while for the lower category is 0%. While the level of discipline in introverted students is also in the category of “medium” where as many as 12% or two students are at the high category, while 88% or sixteen students are in the medium category, and that of the lower category by 22% or four students. after conducting t-test, it is obtained Mean = Extrovert 36.00 and Introvert 35.39 F = 031 and sig (p) = 862 then the value >0.05, then there was no significant difference between the level of discipline in students with extroverted and introverted personality.